1SDA072810R1 ABB E1.2B 1250 Ekip G Hi-Touch LSIG 4p WMP Air Circuit Breaker

Why Choose the ABB E1.2B 1250 Ekip G Hi-Touch LSIG 4p WMP Air Circuit Breaker?

The ABB 1SDA072810R1 is a SACE Emax 2 E1.2B air circuit breaker (ACB) designed for advanced generator and low-voltage power distribution protection. Rated at 1250 A, this four-pole breaker combines ABB’s compact E1.2B frame with an Ekip G Hi-Touch LSIG electronic trip unit, providing long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection.

The Ekip G Hi-Touch release extends ABB’s advanced Hi-Touch protection and monitoring platform with functions suited to generator applications. It combines comprehensive LSIG circuit protection with advanced measurement, monitoring and power-management capabilities, making this configuration particularly suitable for generator incomers, standby generation systems and installations where generator and distribution protection must be coordinated.

The 1SDA072810R1 is a four-pole withdrawable mobile part (WMP) with a rated uninterrupted current of 1250 A and rated operational voltage of 690 V AC. The E1.2B performance level provides an ultimate short-circuit breaking capacity of 42 kA at 400–690 V AC and a rated short-time withstand current of 42 kA for 1 second, supporting dependable protection across demanding low-voltage applications.

Key Advantages

• 1250 A rated uninterrupted current for substantial generator and distribution loads.
• 690 V AC rated operational voltage supports a broad range of low-voltage systems.
• 42 kA ultimate short-circuit breaking capacity at 400–690 V AC for consistent fault interruption performance.
• 42 kA short-time withstand current for 1 second supports selective protection strategies.
• Ekip G Hi-Touch LSIG electronic trip unit combines advanced circuit and generator-oriented protection.
• Long-time, short-time, instantaneous and earth-fault protection provides comprehensive fault protection.
• Integrated earth-fault protection enhances protection of generators, feeders and distribution circuits.
• Four-pole configuration with 100% neutral-pole current capability suits three-phase four-wire networks.
• Withdrawable mobile-part construction facilitates isolation, servicing and switchboard maintenance.

Key Features

• ABB SACE Emax 2 E1.2B series.
• 1250 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Four-pole configuration.
• 100% neutral-pole current rating.
• B short-circuit performance level.
• 42 kA Icu at 400–690 V AC.
• 42 kA Icw for 1 second.
• 24 kA Icw for 3 seconds.
• 100% Ics/Icu service breaking capacity ratio.
• Ekip G Hi-Touch LSIG electronic trip unit.
• LSIG protection provides long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection.
• Generator-oriented protection and advanced monitoring capabilities through the Ekip G Hi-Touch platform.
• Withdrawable mobile part (WMP) configuration.
• Four auxiliary contacts for status and control functions.
• Circuit-breaker open/closed position indication.

Advanced Generator and Hi-Touch LSIG Protection

The ABB SACE Emax 2 E1.2B combines compact air circuit breaker construction with advanced electronic protection for generator and low-voltage distribution applications. With a rated uninterrupted current of 1250 A, an ultimate breaking capacity of 42 kA across 400–690 V AC and a short-time withstand capability of 42 kA for 1 second, this configuration provides robust and consistent fault-current performance within ABB’s compact E1.2 frame.

The Ekip G Hi-Touch LSIG electronic trip unit provides long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection while adding advanced functionality for generator applications. Combined with the monitoring and power-management capabilities of the Hi-Touch platform, it is well suited to installations where generator operation, electrical protection and system supervision must work together within a coordinated low-voltage network.

Typical Applications

• Generator protection and generator incomer switchboards.
• Standby and emergency generating systems.
• Low-voltage main and sub-distribution switchboards.
• Three-phase four-wire electrical distribution systems.
• Industrial power generation and distribution systems.
• Commercial and infrastructure backup-power installations.
• Critical-power and continuity-of-supply applications.
• Distributed generation and local energy systems.
• Systems requiring selective short-circuit and earth-fault protection.
• Advanced power monitoring and energy-management installations.
• Switchboards requiring withdrawable four-pole circuit breaker construction.